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Water has the formula H2O.  Water can be made from the reaction of hydrogen and oxygen.  If [x] g of hydrogen react fully with [y] g of oxygen, then ____ of water is made.

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In the SI system of measurement, the unit of mass is the 

What is your favorite subject? Hint: This is a HISTORY class.

Students’ comments from the Fall 2023 course evaluation on grading in the course: 

Rust has the formula Fe2O3 and it’s made from iron metal reacting with oxygen over time.  Assume you had a [x] g block of pure iron metal than fully oxidized to rust and the mass of that product was [y] g.  What must have been the mass of oxygen that initially reaction with pure iron?

An atom has atomic number 92 and mass number 238.  Which of these is an isotope of this atom?  

Which study design is best described by the following: unable to provide data on absolute risk?

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